Remove/replace killme() with *exit()

[friendica.git] / src / Core / System.php

diff --git a/src/Core/System.php b/src/Core/System.php
index cbffcdbef1c8efeb438128aaf1833ef960b5ba1f..14631b5e9d86ef07b820c751ca8b1c4f4b272e6f 100644 (file)
--- a/src/Core/System.php
+++ b/src/Core/System.php
@@ -5,6 +5,9 @@
 namespace Friendica\Core;
 
 use Friendica\BaseObject;
+use Friendica\Core\Logger;
+use Friendica\Core\Renderer;
+use Friendica\Network\HTTPException\InternalServerErrorException;
 use Friendica\Util\XML;
 
 /**
@@ -99,7 +102,7 @@ class System extends BaseObject
                }
 
                if ($st) {
-                       logger('xml_status returning non_zero: ' . $st . " message=" . $message);
+                       Logger::log('xml_status returning non_zero: ' . $st . " message=" . $message);
                }
 
                header("Content-type: text/xml");
@@ -108,7 +111,7 @@ class System extends BaseObject
 
                echo XML::fromArray($xmldata, $xml);
 
-               killme();
+               exit();
        }
 
        /**
@@ -123,9 +126,33 @@ class System extends BaseObject
        {
                $err = '';
                if ($val >= 400) {
-                       $err = 'Error';
-                       if (!isset($description["title"])) {
-                               $description["title"] = $err." ".$val;
+                       if (!empty($description['title'])) {
+                               $err = $description['title'];
+                       } else {
+                               $title = [
+                                       '400' => L10n::t('Error 400 - Bad Request'),
+                                       '401' => L10n::t('Error 401 - Unauthorized'),
+                                       '403' => L10n::t('Error 403 - Forbidden'),
+                                       '404' => L10n::t('Error 404 - Not Found'),
+                                       '500' => L10n::t('Error 500 - Internal Server Error'),
+                                       '503' => L10n::t('Error 503 - Service Unavailable'),
+                                       ];
+                               $err = defaults($title, $val, 'Error ' . $val);
+                               $description['title'] = $err;
+                       }
+                       if (empty($description['description'])) {
+                               // Explanations are taken from https://en.wikipedia.org/wiki/List_of_HTTP_status_codes
+                               $explanation = [
+                                       '400' => L10n::t('The server cannot or will not process the request due to an apparent client error.'),
+                                       '401' => L10n::t('Authentication is required and has failed or has not yet been provided.'),
+                                       '403' => L10n::t('The request was valid, but the server is refusing action. The user might not have the necessary permissions for a resource, or may need an account.'),
+                                       '404' => L10n::t('The requested resource could not be found but may be available in the future.'),
+                                       '500' => L10n::t('An unexpected condition was encountered and no more specific message is suitable.'),
+                                       '503' => L10n::t('The server is currently unavailable (because it is overloaded or down for maintenance). Please try again later.'),
+                                       ];
+                               if (!empty($explanation[$val])) {
+                                       $description['description'] = $explanation[$val];
+                               }
                        }
                }
 
@@ -133,16 +160,16 @@ class System extends BaseObject
                        $err = 'OK';
                }
 
-               logger('http_status_exit ' . $val);
+               Logger::log('http_status_exit ' . $val);
                header($_SERVER["SERVER_PROTOCOL"] . ' ' . $val . ' ' . $err);
 
                if (isset($description["title"])) {
-                       $tpl = get_markup_template('http_status.tpl');
-                       echo replace_macros($tpl, ['$title' => $description["title"],
+                       $tpl = Renderer::getMarkupTemplate('http_status.tpl');
+                       echo Renderer::replaceMacros($tpl, ['$title' => $description["title"],
                                '$description' => defaults($description, 'description', '')]);
                }
 
-               killme();
+               exit();
        }
 
        /**
@@ -158,7 +185,7 @@ class System extends BaseObject
        public static function jsonExit($x, $content_type = 'application/json') {
                header("Content-type: $content_type");
                echo json_encode($x);
-               killme();
+               exit();
        }
 
        /**
@@ -170,7 +197,7 @@ class System extends BaseObject
        public static function createUUID($prefix = '')
        {
                $guid = System::createGUID(32, $prefix);
-               return substr($guid, 0, 8). '-' . substr($guid, 8, 4) . '-' . substr($guid, 12, 4) . '-' . substr($guid, 16, 4) . '-' . substr($guid, 20, 12);
+               return substr($guid, 0, 8) . '-' . substr($guid, 8, 4) . '-' . substr($guid, 12, 4) . '-' . substr($guid, 16, 4) . '-' . substr($guid, 20, 12);
        }
 
        /**
@@ -216,22 +243,56 @@ class System extends BaseObject
                return substr($trailer . uniqid('') . mt_rand(), 0, 26);
        }
 
+       /**
+        * Returns the current Load of the System
+        *
+        * @return integer
+        */
+       public static function currentLoad()
+       {
+               if (!function_exists('sys_getloadavg')) {
+                       return false;
+               }
+
+               $load_arr = sys_getloadavg();
+
+               if (!is_array($load_arr)) {
+                       return false;
+               }
+
+               return max($load_arr[0], $load_arr[1]);
+       }
+
+       /**
+        * Redirects to an external URL (fully qualified URL)
+        * If you want to route relative to the current Friendica base, use App->internalRedirect()
+        *
+        * @param string $url The new Location to redirect
+        * @throws InternalServerErrorException If the URL is not fully qualified
+        */
+       public static function externalRedirect($url)
+       {
+               if (empty(parse_url($url, PHP_URL_SCHEME))) {
+                       throw new InternalServerErrorException("'$url' is not a fully qualified URL, please use App->internalRedirect() instead");
+               }
+
+               header("Location: $url");
+               exit();
+       }
+
        /// @todo Move the following functions from boot.php
        /*
        function killme()
-       function goaway($s)
        function local_user()
        function public_contact()
        function remote_user()
        function notice($s)
        function info($s)
        function is_site_admin()
-       function random_digits($digits)
        function get_server()
        function get_temppath()
        function get_cachefile($file, $writemode = true)
        function get_itemcachepath()
        function get_spoolpath()
-       function current_load()
        */
 }